High-tension strain-insulator.



LOUIS STEINBERGER, OF` BROOKLYN, NEW YORK.

HIGH-TENSION sTnAIN-INSULATOR.

Specification of Letters Patent. Patented June 13, 1916.

Application led February 10, 1912. Serial No. 676,877.

To all whom it 'may concern .f

Be it known that I, Louis Srnnvnncnn, residing at Brooklyn, in the count-y of Kings and State of New York, have invented certain new and useful Improvements in High- Tension Strain-Insulators, of which the following is a speciication.

This invention relates to high tension strain insulators, such as are used in connection with lines for the transmission of high potential currents, andl to the arrangement of such insulators in related series for the purposes of ordinary practice.

Among the objects which it is sought to attain may be stated the following: I. To provide insulatorV units of such structure that they may readily be united one to another either to form suspending means for a conductor or the like, or to constitute a multiple insulator for dead-ending purposesor the like. II. To provide insulator units whereby the foregoing object is attained, of such construction that high insulation value is secured, in whatever relation the units are united to each other. III. To provide insulator units as described, of such construction that when used individually or in some multiple relation, insulating valuesl will be conserved because of adequate protection against moisture, dust, etc. IV. To provide suspension or dead-ending multiples which are as a whole rigid, of great insulating value, well protected against moisture, ete., and readily separable into the component individual units.

Other objects and aims of lthe invention, moreor less broad than those stated above, will be in part obvious and in part specifically referred to in the course of the following description of the elements, combinations, varrangements of parts, and applications of principles, constituting the invention; and the scope of protection contemplated will appear in the claims.

In the accompanying drawings, in which I have shown a merely illustrativetembodiment of the invention: Figure l represents a series of units connected to form a multiple suspension insulator, one of the individual units being shown in elevation; and the others in central vertical section; and Fig. 2 is an elevation partly in section of a multiple dead-ending or strain insulator visualizing my invention.

The individual units shown in the figures of the drawings are of similar construction,

so that a description of one of these units, as to its general features, will suflice.

Referring to the numerals on'the drawings, 3 indicates the body portion of the insulator, which may be of general oblong conformation, provided with a hood 4 that springs from near one end of the insulator, which vmay be termed the top of the insulator, andl extends in thc general longitudinal direction of the insulator toward the opposite end thereof. The body portion of the insulator is further provided -with openings 5 and G, extending thereinto from each end, there being a median partition 7 defining the inner ends of said openings. Preferably these openings are slot-like, and the planes `of the lengths thereof cross each other` At` each end of each slot there is an aperture 16 extending vthrough the partition, the apertures that open from one slot passing through the material `of the insulator on opposite sides of the other slot. At 8 and 9 are two metallic plates, disposed in the bottoms of the respective recesses 5 and 6, and having apertures registering with the apertures that extend from the bottom of the slot in which they are located. l0 indicatestension members which may take the form of U-shaped pieces, as shown, having their free ends threaded. These tension members are placed in position with their connecting pieces resting in the bottoms of the slots/on the bearing plates, and the arms of the tension members extending through the apertures of said bearing plates, and through the apertures that extend through the body of the insulator, the free ends of one tension member extending beyond one end of the insulator, and the free ends of the other tension member extending beyond the other end o'f the insulator, the connecting `pieces of the tension members being of course insulated from each other by the partition that intervenes between the bottoms of the two slots. At the projecting ends of the tension members, respectively, are means whereby the ends of each tension member are connected together, and whereby thc ends of the insulator may be connected to otherinsulators or dexices. Preferably I providc cover plates 1i, which cover the ends of the insulator and of course the respective slots and (i, which, by the way, are iilled with insulating material after the tension members have been put into place; said cover plates being provided with apertures through which the free ends of the tension members pass, and said cover plates having flanges which engage the body o'lf the insulator. The cover plates are held in their relation to the ends or the insulator, and to their respective tension members by means of nuts 1'2 engaging the threaded ends of saidtension members.

The general construction of insulator, and the arrangement of tension member' withre spect thereto, is like that shown in the United States patent issued to me August 1, ieri.

For the purpose of connecting a series of such units as .have been described, to form a multiple suspension member such as shown in Fig. 1, the cover plate at the lower end of one insulator may be provided with a projecting threaded boss 14, and the top cover plate of the next unit may be provided with an interiorly threaded socket member 15, in which said threaded. boss would engage as shown in Fig. 1. However, l prefer that these cover plates may be interchangeable. so that I can provide either or both ends or' the insulator with a lcover plate carrying a threaded boss or a cover plate carrying. a threaded socket member.

In Eig. 2, I have shown two insulator unit-s such as already described, one of which is provided at what as been referred to as its top with a cover plate having a threaded boss and the other unit is provided at its top with a cover plate having a threaded socket member. Thus the two units may be connected rigidly end to end, with their hoods extending in opposite di rections. The bottom ends of the two insulators in Fig. 2 preferably both carry cover plates provided with threaded bosses with which are engaged eyes 16 provided with threaded sockets which. lit upon said threaded bosses. By means of these eyes the multiple insulator is supported.

lt will be apparent that with insulator units of the general construction described, and with interchangeable cover plates, it is a matter of great ease to build up a multi ple suspension insulator such as shown in Fig. 1, or a multiple deadending insulator, such as shown in Fig. 2; while each unit is capable ol use independently as desired.

l able with each' other so as to adapt either end of said body for cooperative relation with a given object, and means whereby said cover plates may be connected with either ot' said strain rods at 't ill.

2. In an insulator, the combination with an elongated body portion lxs'rving a` strain rod therein projecting therefrom at one locality on said body and a second strain rod therein projecting therefrom at another locality on said body, oi? separately formed members attached one to the. projecting portions oit each of said strain rods, said separately formed members each having a part otI a different shape lrom a` corri-)spending part on another o't' said separately formed members so as to adapty said members ior attachment to objects of ditferent shapes, and said men'lbers beinginterchangeable from one strain rod to another lor the purpose of adapting the said {lilik-rent localities on said body lor direct attachment with a given object.

3. ln an insulator, the combination with an elongated body portion, o'l a pair of attaching members therefor fixed one at each end oi said body, one of said attaching members being formed with a threaded socket and the other o'l said attaching members being formed with a threaded stud, and said att-aching members being interchangeable from one end of the body to the other,

.all whereby either end of the body may be copies o! this patent may 'be obtained for ive sent: each, by addressing the Wommllsloner of Intenta, Washington. D. C, 

